Radeon R9 390 8G vs Radeon RX 6750 XT

Intro

Compare those specs to the Radeon RX 6750 XT, which comes with core clock speeds of 2150 MHz on the GPU, and 2250 MHz on the 12288 MB of GDDR6 memory. It features 2560 SPUs as well as 160 TAUs and 64 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6750 XT		250 Watts
Radeon R9 390 8G		275 Watts
	Difference: 25 Watts (10%)

Memory Bandwidth

Theoretically, the Radeon RX 6750 XT should be a bit faster than the Radeon R9 390 8G overall. (explain)

Radeon RX 6750 XT		442368 MB/sec
Radeon R9 390 8G		384000 MB/sec
	Difference: 58368 (15%)

Texel Rate

The Radeon RX 6750 XT should be quite a bit (more or less 115%) better at texture filtering than the Radeon R9 390 8G. (explain)

Radeon RX 6750 XT		344000 Mtexels/sec
Radeon R9 390 8G		160000 Mtexels/sec
	Difference: 184000 (115%)

Pixel Rate

The Radeon RX 6750 XT is a lot (approximately 115%) faster with regards to AA than the Radeon R9 390 8G, and also will be able to handle higher resolutions without losing too much performance. (explain)

Radeon RX 6750 XT		137600 Mpixels/sec
Radeon R9 390 8G		64000 Mpixels/sec
	Difference: 73600 (115%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the max amount of information (in units of megabytes per second) that can be transferred across the external memory interface in a second. It's worked out by multiplying the card's bus width by the speed of its memory. If it uses DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one second. This is calculated by multiplying the total amount of texture units by the core speed of the chip. The higher the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.